117870 has 16 divisors (see below), whose sum is σ = 282960. Its totient is φ = 31424.

The previous prime is 117851. The next prime is 117877. The reversal of 117870 is 78711.

It is a self number, because there is not a number n which added to its sum of digits gives 117870.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117877) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1935 + ... + 1994.

It is an arithmetic number, because the mean of its divisors is an integer number (17685).

2¹¹⁷⁸⁷⁰ is an apocalyptic number.

117870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

117870 is an abundant number, since it is smaller than the sum of its proper divisors (165090).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117870 is a wasteful number, since it uses less digits than its factorization.

117870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3939.

The product of its (nonzero) digits is 392, while the sum is 24.

The square root of 117870 is about 343.3220062856. The cubic root of 117870 is about 49.0306624689.

It can be divided in two parts, 1 and 17870, that added together give a palindrome (17871).

The spelling of 117870 in words is "one hundred seventeen thousand, eight hundred seventy".